In other words, a Java class that supports the SOLID open-closed principle will find use in originally un-envisioned scenarios, and be flexible enough to work with newly created classes, interfaces ...

Maximizing code reuse in your Java programs means writing code that is easy to read, ... Open-Closed Principle (OCP): Software entities (classes, ... An example is the persistence framework, ...

Sealed classes make Java an even more powerful and expressive language and set the stage for even more sophisticated techniques such as pattern matching, which we'll explore in a subsequent article. A ...